This book contains contributions to two joint seminars organized by the Universities of Kiel and St. Petersburg. Both international commercial arbitration and maritime law are characterized by a mixture of international and national sources. The two subjects are brought together here in one volume as maritime disputes often go to arbitration and both areas show, from a theoretical perspective, a number of interesting parallels and differences. Germany and Russia have ratified the major conventions in these fields, but many issues are left to domestic law and deserve a comparative evaluation.